NFTokenOffer

[Source]

An NFTokenOffer entry represents an offer to buy, sell or transfer an NFT. You can create an NFT buy or sell offer by sending an NFTokenCreateOffer transaction.

(Added by the NonFungibleTokensV1_1 amendment.)

Example NFTokenOffer JSON

{
    "Amount": "1000000",
    "Flags": 1,
    "LedgerEntryType": "NFTokenOffer",
    "NFTokenID": "00081B5825A08C22787716FA031B432EBBC1B101BB54875F0002D2A400000000",
    "NFTokenOfferNode": "0",
    "Owner": "rhRxL3MNvuKEjWjL7TBbZSDacb8PmzAd7m",
    "OwnerNode": "17",
    "PreviousTxnID": "BFA9BE27383FA315651E26FDE1FA30815C5A5D0544EE10EC33D3E92532993769",
    "PreviousTxnLgrSeq": 75443565,
    "index": "AEBABA4FAC212BF28E0F9A9C3788A47B085557EC5D1429E7A8266FB859C863B3"
}

NFTokenOffer Fields

Name	JSON Type	Internal Type	Required?	Description
`Amount`	Currency Amount	AMOUNT	Yes	Amount expected or offered for the NFToken. If the token has the `lsfOnlyXRP` flag set, the amount must be specified in XRP. Sell offers that specify assets other than XRP must specify a non-zero amount. Sell offers that specify XRP can be 'free' (that is, the Amount field can be equal to `"0"`).
`Destination`	string	AccountID	No	The AccountID for which this offer is intended. If present, only that account can accept the offer.
`Expiration`	number	UInt32	No	The time after which the offer is no longer active. The value is the number of seconds since the Ripple Epoch.
`LedgerEntryType`	string	UInt16	Yes	The value `0x0037`, mapped to the string `NFTokenOffer`, indicates that this is an offer to trade a `NFToken`.
`NFTokenID`	string	Hash256	Yes	The `NFTokenID` of the NFToken object referenced by this offer.
`NFTokenOfferNode`	string	UInt64	No	Internal bookkeeping, indicating the page inside the token buy or sell offer directory, as appropriate, where this token is being tracked. This field allows the efficient deletion of offers.
`Owner`	string	AccountID	Yes	Owner of the account that is creating and owns the offer. Only the current Owner of an NFToken can create an offer to sell an NFToken, but any account can create an offer to buy an NFToken.
`OwnerNode`	string	UInt64	No	Internal bookkeeping, indicating the page inside the owner directory where this token is being tracked. This field allows the efficient deletion of offers.
`PreviousTxnID`	string	Hash256	Yes	Identifying hash of the transaction that most recently modified this object.
`PreviousTxnLgrSeq`	number	UInt32	Yes	Index of the ledger that contains the transaction that most recently modified this object.

NFTokenOffer Flags

NFTokenOffer entries can have the following flags combined in the Flags field:

Flag Name	Hex Value	Decimal Value	Description
`lsfSellNFToken`	`0x00000001`	1	If enabled, the offer is a sell offer. Otherwise, the offer is a buy offer.

NFTokenOffer Transactions

Unlike Offers for fungible tokens, a NFTokenOffer is not stored in an order book and is never automatically matched or executed. A buyer must explicitly choose to accept an NFTokenOffer that offers to sell a NFToken. Similarly, a seller must explicitly choose to accept a specific NFTokenOffer that offers to buy a NFToken object that they own.

The transactions for NFToken trading are:

Locating NFTokenOffer entries

Each unique NFT has up to two directories: one contains offers to buy the token and the other contains offers to sell the token. (These two directories are created as necessary and deleted if empty.) Marketplaces or other client applications can use these directories to find and display offers to trade NFToken objects to users or even automatically match them and accept them.

NFTokenOffer Reserve

NFTokenOffer entries each count as one item towards the owner reserve of the account placing the offer, as long as the entry is in the ledger. Accepting or canceling the offer frees up the reserve.

NFTokenOffer ID Format

The unique ID (NFTokenOfferID) of a NFTokenOffer object is the result of the following values concatenated in order:

The NFTokenOffer space key, 0x0037;
The AccountID of the account placing the offer; and
The Sequence (or Ticket) of the NFTokenCreateOffer transaction that created the NFTokenOffer.